Irregular Galaxies
Threephase circuits. Irregular galaxy A galaxy that does not have the clearly defined shape and structure of typical elliptical, lenticular, or spiral galaxies. Irregular galaxies typically contain large amounts of gas and dust, and their stars are often young. The word 'galaxy' brings to mind images of the Milky Way or perhaps the Andromeda galaxy, with their spiral arms and central bulges.These spiral galaxies are what people commonly imagine all galaxies look like.
Tuning-fork style diagram of the sequence An irregular galaxy is a that does not have a distinct regular shape, like a or an. Xbox usb jtag software. Irregular galaxies do not fall into any of the regular types of the. They do not have a in the centre, nor any trace of structure. They are quite common: they may make up a quarter of all galaxies.
Most were once spiral or elliptical galaxies but were deformed by gravitational pull. Irregular galaxies also contain abundant amounts of gas and dust. There are three sorts of irregular galaxies: • An Irr-I galaxy ( Irr I) is an irregular galaxy that features some but not enough to place it cleanly into the Hubble sequence. Some of the irregular galaxies are small that are being distorted by the gravity of a larger neighbour. • An Irr-II galaxy ( Irr II) is an irregular galaxy that does not appear to feature any structure that can place it into the Hubble sequence. • Dwarf irregulars, This type of galaxy may be important, as they often have a low level of and relatively high levels of gas. This is similar to the earliest galaxies in the Universe.
They may be a local (and recent) version of the known to exist in. The were once classified as irregular galaxies, but have since been found to contain barred spiral structures. • Butz, Stephen D.
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Spiral Elliptical And Irregular Galaxies
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Irregular Galaxies Information
& Hunter D.A. Structure and evolution of irregular galaxies. Annual Review of Astronomy and Astrophysics. 22: 37-74.: • Grebel, Eva K. The evolutionary history of Local Group irregular galaxies.
In McWilliam, Andrew & Rauch, Michael (eds) Origin and evolution of the elements. Cambridge University Press, 234-254.